| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.005 INCHES NOMINAL |
| FASTENER LENGTH | 15.693 INCHES NOMINAL |
| MATERIAL | STEEL COMP H11 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND |
| 50.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HEAD HEIGHT | 0.563 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.673 INCHES MINIMUM AND |
| 0.688 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 1.153 INCHES MINIMUM AND |
| 1.163 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.080 INCHES MINIMUM AND |
| 0.100 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FLAT |
| PRIMARY WASHER OUTSIDE DIAMETER | 1.182 INCHES MINIMUM AND |
| 1.192 INCHES MAXIMUM |
| PRIMARY WASHER MATERIAL THICKNESS | 0.071 INCHES MINIMUM AND |
| 0.085 INCHES MAXIMUM |
| SPECIAL FEATURES | ITEM IS MADE UP OF SPACER-PART NUMBER 965548-01, WASHER-PART NUMBERMS21299C10 AND BOLT-PART NUMBER 965572-01 |